File modules/dsl/ast/DslFunction.class.php

Last commit: Sun Jun 26 15:46:54 2022 +0200	Jan Dankert	Fix: Another, little better, hack for parameterless functions. Shunting yard seems to be unable to handle empty parentheses.


     1 <?php
     2 
     3 namespace dsl\ast;
     4 
     5 use dsl\DslParserException;
     6 use dsl\DslRuntimeException;
     7 use dsl\DslToken;
     8 
     9 class DslFunction extends DslElement implements DslStatement
    10 {
    11 	/**
    12 	 * @var String[]
    13 	 */
    14 	public $parameters;
    15 
    16 	/**
    17 	 * @var DslStatementList
    18 	 */
    19 	public $body;
    20 
    21 	/**
    22 	 * creates the function.
    23 	 *
    24 	 * @param array $context
    25 	 * @return mixed|void
    26 	 * @throws DslRuntimeException
    27 	 */
    28 	public function execute( & $context ) {
    29 
    30 		$clonedContext = $context;
    31 		return $this->body->execute( $context );
    32 	}
    33 
    34 	/**
    35 	 * DslFunction constructor.
    36 	 *
    37 	 * @param $functionParameter DslToken[]
    38 	 * @param $functionBody DslStatement
    39 	 * @throws DslParserException
    40 	 */
    41 	public function __construct( $functionParameter, $functionBody )
    42 	{
    43 		$this->parameters = [];
    44 		foreach( $this->splitByComma( $functionParameter ) as $parameter ) {
    45 			if   ( sizeof($parameter) != 1 )
    46 				throw new DslParserException('function parameter must be a single name');
    47 			$nameToken = $parameter[0];
    48 			if   ( $nameToken->type == DslToken::T_NONE ) // no parameter
    49 				continue;
    50 			if   ( $nameToken->type != DslToken::T_STRING )
    51 				throw new DslParserException('function parameter must be a name');
    52 
    53 			$this->parameters[] = $nameToken->value;
    54 		}
    55 
    56 		$this->body = new DslStatementList( $functionBody );
    57 	}
    58 
    59 	public function parse($tokens)
    60 	{
    61 	}
    62 
    63 }



Download modules/dsl/ast/DslFunction.class.php


History
Sun, 26 Jun 2022 15:46:54 +0200	Jan Dankert	Fix: Another, little better, hack for parameterless functions. Shunting yard seems to be unable to handle empty parentheses.
Tue, 31 May 2022 00:30:18 +0200	Jan Dankert	New: DSL with support for parameterless functions.
Sun, 29 May 2022 16:56:40 +0200	Jan Dankert	New: DSL with support for functions with return values, full arithmetic, object properties
Sun, 29 May 2022 01:13:27 +0200	Jan Dankert	New: DSL with support for functions
Sat, 28 May 2022 18:00:13 +0200	Jan Dankert	New: DSL with a much better syntax parsing and support for assignments, conditions, ...
Wed, 25 May 2022 22:47:17 +0200	Jan Dankert	New: DSL (domain specific language) for code elements. The old way with PHP code ist not sandboxed and unsecure. This approach is a minimalistic, javascript-like, scripting engine. For now only simple function calls are possible, for example: alert("example");